[PATCH v3 07/11] ARM: KVM: fix handling of trapped 64bit coprocessor accesses
catalin.marinas at arm.com
Thu Feb 6 05:49:58 EST 2014
On Wed, Feb 05, 2014 at 07:55:47PM +0000, Marc Zyngier wrote:
> Commit 240e99cbd00a (ARM: KVM: Fix 64-bit coprocessor handling)
> changed the way we match the 64bit coprocessor access from
> user space, but didn't update the trap handler for the same
> set of registers.
> The effect is that a trapped 64bit access is never matched, leading
> to a fault being injected into the guest. This went unnoticed as we
> didn't really trap any 64bit register so far.
> Placing the CRm field of the access into the CRn field of the matching
> structure fixes the problem. Also update the debug feature to emit the
> expected string in case of failing match.
> Signed-off-by: Marc Zyngier <marc.zyngier at arm.com>
> Reviewed-by: Christoffer Dall <christoffer.dall at linaro.org>
Acked-by: Catalin Marinas <catalin.marinas at arm.com>
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